"fateful" in the adjective sense
1. fateful, fatal
having momentous consequences of decisive importance
"that fateful meeting of the U.N. when...it declared war on North Korea"- Saturday Rev
"the fatal day of the election finally arrived"
2. fateful, foreboding, portentous
ominously prophetic
3. black, calamitous, disastrous, fatal, fateful
of events) having extremely unfortunate or dire consequences bringing ruin
"the stock market crashed on Black Friday"
"a calamitous defeat"
"the battle was a disastrous end to a disastrous campaign"
"such doctrines, if true, would be absolutely fatal to my theory"- Charles Darwin
"it is fatal to enter any war without the will to win it"- Douglas MacArthur
"a fateful error"
4. fatal, fateful
controlled or decreed by fate predetermined
"a fatal series of events"
Source: WordNet® (An amazing lexical database of English)
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